Medical image diagnostic apparatus, medical image diagnostic method, and storage medium

Abstract

A medical image diagnostic apparatus of an embodiment has processing circuitry. The processing circuitry is configured to acquire electrocardiographic waveform data of a subject, and set one imaging condition to be applied to electrocardiogram-gated imaging of the subject among a plurality of preset imaging conditions for electrocardiogram-gated imaging on the basis of the acquired electrocardiographic waveform data.

What is claimed is: 
     
         1 . A medical image diagnostic apparatus comprising processing circuitry configured to:
 acquire electrocardiographic waveform data of a subject; and   set one imaging condition to be applied to electrocardiogram-gated imaging of the subject among a plurality of preset imaging conditions for electrocardiogram-gated imaging on the basis of the acquired electrocardiogram waveform data.   
     
     
         2 . The medical image diagnostic apparatus according to  claim 1 , wherein the imaging condition includes waveform information serving as a reference for imaging timing in the electrocardiogram-gated imaging, imaging timing in the electrocardiogram-gated imaging, and an imaging method. 
     
     
         3 . The medical image diagnostic apparatus according to  claim 1 , wherein the plurality of imaging conditions include at least a first condition for a subject with a normal heartbeat, a second condition for a subject with an abnormal heartbeat, and a third condition for a subject with heart disease. 
     
     
         4 . The medical image diagnostic apparatus according to  claim 1 , wherein the processing circuitry is configured to:
 acquire electrocardiographic waveform data of the subject measured at a first timing before the electrocardiogram-gated imaging is performed; and   set the one imaging condition to be applied to the electrocardiogram-gated imaging to be performed thereafter on the basis of the electrocardiographic waveform data measured at the first timing.   
     
     
         5 . The medical image diagnostic apparatus according to  claim 4 , wherein the processing circuitry is further configured to:
 acquire electrocardiographic waveform data of the subject measured at a second timing after the first timing before the electrocardiogram-gated imaging is performed; and   change the one imaging condition on the basis of the electrocardiographic waveform data measured at the second timing.   
     
     
         6 . The medical image diagnostic apparatus according to  claim 5 , wherein
 the first timing is during breathing exercise, and   the second timing is during a contrast agent monitoring scan.   
     
     
         7 . The medical image diagnostic apparatus according to  claim 1 , wherein the processing circuitry is configured to automatically set the one imaging condition, or set the one imaging condition on the basis of an instruction from an operator. 
     
     
         8 . The medical image diagnostic apparatus according to  claim 1 , wherein
 the medical image diagnostic apparatus is an X-ray CT apparatus,   the plurality of imaging conditions include a plurality of modes for defining a specific period regarding X-ray radiation, and   the processing circuitry is configured to:   set the specific period on the basis of an R wave in the electrocardiographic waveform data in a first mode among the plurality of modes; and   set the specific period on the basis of a P wave in the electrocardiographic waveform data in a second mode among the plurality of modes.   
     
     
         9 . The medical image diagnostic apparatus according to  claim 8 , wherein the processing circuitry is configured to set the specific period on the basis of the P wave to make the specific period fall between the P wave and the R wave in the second mode. 
     
     
         10 . The medical image diagnostic apparatus according to  claim 8 , wherein the specified period is a period in which X-rays are radiated or a period in which a higher dose of X-rays is radiated than in periods other than the specified period. 
     
     
         11 . The medical image diagnostic apparatus according to  claim 1 , wherein
 the medical image diagnostic apparatus is an X-ray CT apparatus, and   the imaging condition includes at least an exposure phase of X-rays, an exposure method, and a trigger signal indicating a waveform serving as a reference for the exposure phase in the electrocardiogram-gated imaging.   
     
     
         12 . The medical image diagnostic apparatus according to  claim 11 , wherein
 the plurality of imaging conditions include at least a first condition for a subject with a normal heartbeat, a second condition for a subject with an abnormal heartbeat, and a third condition for a subject with heart disease, and   the trigger signal in the first condition and the trigger signal in the third condition are different from each other.   
     
     
         13 . The medical image diagnostic apparatus according to  claim 12 , wherein
 the trigger signal in the first condition is an R wave in the electrocardiographic waveform data, and   the trigger signal in the third condition is a P wave in the electrocardiographic waveform data.   
     
     
         14 . The medical image diagnostic apparatus according to  claim 1 , wherein the processing circuitry is further configured to cause a display to display the electrocardiographic waveform data and diagnostic information measured by an apparatus different from the medical image diagnostic apparatus. 
     
     
         15 . The medical image diagnostic apparatus according to  claim 1 , wherein the processing circuitry is configured to:
 set an imaging condition for a subject with heart disease as an initial condition of the one imaging condition in a case where diagnostic information of the subject obtained in advance indicates that the subject has heart disease; and   change the imaging condition to an imaging condition for a subject with a normal heartbeat in a case where the electrocardiographic waveform data of the subject indicates a normal heartbeat during a contrast agent monitoring scan of the subject.   
     
     
         16 . The medical image diagnostic apparatus according to  claim 1 , wherein the processing circuitry is further configured to cause the display to display a notification that a change has occurred in the electrocardiographic waveform data during a contrast agent monitoring scan of the subject. 
     
     
         17 . A medical image diagnostic method using a computer of a medical image diagnostic apparatus, comprising:
 acquiring electrocardiographic waveform data of a subject; and   setting one imaging condition to be applied to electrocardiogram-gated imaging of the subject among a plurality of preset imaging conditions for electrocardiogram-gated imaging on the basis of the acquired electrocardiographic waveform data.   
     
     
         18 . A computer-readable non-transitory storage medium storing a program causing a computer of a medical image diagnostic apparatus to:
 acquire electrocardiographic waveform data of a subject; and   set one imaging condition to be applied to electrocardiogram-gated imaging of the subject among a plurality of preset imaging conditions for electrocardiogram-gated imaging on the basis of the acquired electrocardiographic waveform data.